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Old 04-13-2014, 11:00 PM
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Replacing Radiator what to do...

I am debating purchasing a new oem radiator or possibly the aftermarket mishimoto to never deal with problems but the radiator guy says the all aluminum ones have there issues also.

I am losing coolant. Ther e is a couple inches left on the degas bottle and somewhat holding (probably because of the mass amount of coolant at that level. Not sure where I am losing but during my last inspection it looked like at the bond between the plastic and aluminum on the radiator it was leaking because I could see coolant in that area. It could also be loosing some pressure at the thermostat housing (upgraded to billet with new oring) but I doubt a tiny leak that doesnít show much anything is cause off losing so much quickly. I have NOT verified that the problem is at the radiator but I used the pressure test tool and the pressure dropped quick. It is currently blizzard snow where I live so I am going to wait until the weather calms down and spray for bubbles at the suspect location.

Another option is for me to recrimp but I figured it would just leak again sometime soon and I am a little scared to trust me on that one. Taking it into a shop is a little out of the question because the nearest big city is one hour away and I donít have a second vehicle so taking it out and driving it in is not gonna happen especially with the risks. If I have them pull it there it will be 250 for pulling and putting it back in, at that point they would have to order a new one or repair if order a new one I would have to have them pull it again so I am best off ordering oem or mishimoto.

What are your thoughts on going with one or the other?? I plan on keeping my truck for a while but am also tired of working on it so might be paying for service more in the future which could lead me to sell it.

Thanks.
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Old 04-15-2014, 08:47 PM
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So, I checked out the leak tonight. It was leaking around the top large radiator flange that connected to the house. Two spots around the hose to plastic neck mating and one a couple inches away (tried my hardest to make sure it wasn’t coming from a trajectory around the hose because that is fixable. Anyways I think it lived its life. I am not going with just a new top plastic piece. So there is not a clear winner in this situation. Yea OEM made it this far but lets face it we don’t want the plastic down there especially with such a large mating surface. Mishimoto is not worth the dollars. This other brand/brands from Rockauto seem to be poorly shipped and probably have there own problems. I guess I am going to look at what’s around and decide soon.

Good news is this thing has been running and even a little bit hard today and not a phase in coolant or oil temp. Overkill cooling system.
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Old 04-15-2014, 08:55 PM
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All of rockauto's radiators have plastic, most top and bottom..
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Old 04-16-2014, 06:37 AM
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here's an all aluminum...

2 Row w O EOC w TOC High Performance All Aluminum Radiator for 7 3 V8 Diesel At | eBay
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Old 04-17-2014, 09:01 PM
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I went ahead and purchased the mishimoto, found a really good deal.

My next thing I am contemplating is not replumb the transmission lines into the radiator. My opinion is the less hoses and connections less places for failures (reason I would never install a hpx). I don’t think I need the heat loss since when I pull 8k+ trailer up some of the big Colorado passes in summer it never gets above 165 (thanks to the 31 row 6.0 intercooler). I figured the benefit that radiator adds is might be to warm up the transmission on colder days when I have it plugged in (I used to have a heater pad on the transmission pan). As weird as it sounds I also think the front end might benefit from the weight reduction of not using that area. Any thoughts?
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